<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>form</title>
</head>
<script>
    alert("你的输入有误，我严重怀疑你在搞事情！");
    window.location.href="/testjsp/4.11/form.html";
</script>
</body>
</html>
